I've completely given up on having neighbors. My sims literally can't do anything between 10pm to 7am because apparently everything they do
upsets the neighbors. Yet EVERY night the neighbors are doing something that keeps my sim awake. Good relationships help a little but it's really hard to build that up when every night they yell at each other because of noise complaints. There is no preventive options either. No lot trait, no aspiration rewards, volume control, quiet options, or trait features. The night light that stops the monster from coming under the bed in the kids stuff pack is a perfect solution for that similar repetitive issue. Some kind of noise canceling wall item or item upgrade or something to stop it would be great.
This was driving me bonkers so now I move everyone in the building out. No more neighbors. Easy work around, of course apartments now feel less lively but at least my sims get to sleep through the night and sing in the shower while getting ready for work in the morning.